[EXPIRED] WTB/ Contax G 45mm F2 Black (Black 28 for trade)

I'm interested in buying outright or trading my mint black Contax G 28mm F2.8 for a Black 45mm F2. Love the 28mm but am considering springing for the new 24/1.8 (Nex) when it comes out in Dec. and it's too close to the 28.